| Title |
Fabrication and Current Transport Properties of TmBa_{2}Cu_{3}O_{7-x} Coated Conductor by PLD Process |
| Authors |
권오정(Kwon, O-Jong) ; 고락길(Ko, Rock-Kil) ; 구현(Koo, Hyun) ; 배성환(Bae, Sung-Hwan) ; 정명진(Jung, Myung-Jin) ; 오상수(Oh, Sang-Soo) ; 박찬(Park, Chan) |
| Keywords |
TmBCO ; REBCO ; Coated Conductor ; Current density ; Superconductor |
| Abstract |
REBa_{2}Cu_{3}O_{7-d}(REBCO) coated conductors(REBCO CCs) have been studied for electric power applications which require high current density wires. As long as the critical transition temperature(Tc) is concerned, REBCO CCs with large RE^{3+} ions have been expected to have better current transport properties than those with smaller RE^{3+} ions. For this reason, REBCO's with large RE^{3+} ions which include GdBCO, NdBCO and SmBCO have been mainly considered as the superconducting layer of CCs. On the other hand, REBCO's with smaller RE^{3+}ions are expected to have advantages in the fabrication process of CCs because of the lower melting temperature. But it has not yet been made clear which REBCO is the most suitable for the superconducting layer of CCs. In this study, we investigated the current transport properties of REBCO CCs with small RE^{3+} ion and advantages of using that in the CC fabrication process. Thin films of TmBCO, which has smaller RE^{3+}ion than most other RE^{3+} ions, were fabricated on buffered metal substrate as the superconducting layer of CC by PLD process. TmBCO CC shows critical current density (Jc (77 K, sf) = 2.3 MA/cm^2) high enough to be utilized for application in electric power devices. Compared with previous experiments using the same PLD system, deposition temperature was approximately 20°C lower than NdBCO thin films on buffered metal substrates. |